Well, I can comment on 3 skis that I have wanted to try for some time that I rode out at snowmass and to some degree how the CSM may or may not influence my choice moving forward.
I rode the Watea 84, Head IM 82, and Head IM 78, after my lessons with Clendenin. I skied my lessons on the Head SS Magnum at 177. I'm 6' 2" 200 lb so that is about right for me. Jim can comment on the length of the 84's since they are his skis. It has been commented on before on this board that the CSM works well with wide skis since it emphasizes a slower, gradual engagement of the edges. Hard for me to comment really since these are the widest skis I have skied on so I don't have a comparison pre- CSM. But it did feel natural and I could really feel the flat spot and then the gradual engagement of the edges.
Head IM 82 at 172 or 170 (no 178 avail) - this is a pony that just wants to run. A great GS, bullet proof stability, and just wanted to run and they were so much fun that I had fun letting them go. A couple of times I was flying at speeds that made me second guess my judgment

. (I had a big grin) It could do shorter turns but it took more work. I didn't take them into the bumps that I remember. Honestly, I just remember that they were fun to ski fast. I am told that they are also great crud skis, again, little new snow and not much crud to test them on. I probably would not buy them only because bombing down the slope is not my thing.
Watea 84 - A nice blend of both of the Head skis. A great, and really fun ski. They also are a fun GS ski but not as good as the 82. For the way I ski - moderately fast but not a burner - they were fine. They are a better turner than the 82 and didn't mind short turns at all. Took them into some crud and trees and they were pretty good as far as I could tell but this is not the strength of my skiing so don't go by my opinion. Bottom line, they were a good blend and they were a lot of fun. I would definitely think about buying these, a good consideration for a go out West ski.
Head IM 78 at 172 (again the 177 not available) This is an interesting ski and I think I would have enjoyed it even more at 177. Very stable, but doesn't want to be skied flat. Pick a turn and it will carve or brush it out. Good in the bumps, fun on the groomed, I skied through some 6 inch crud and they were rock solid. I did feel myself moving back in the broken snow and I was not sure if this had to do with me, where the skis were mounted, or the fact that the 177 would have been much better at that task. Bottom line, I am just reiterating everything you have already read about this ski. It's pretty darn good. I would want to test the 177 and not sure I would buy because I am looking for a ski I can take out west and jump in the powder should it dump. I wanted to demo the Sultan 85 but they didn't have it in 178.
As I am developing some off piste skills, I am looking at wider skis. Now that I can ski bumps, I also want something that I can take in there and be playful with.
Now if someone has some Kastle MX 88 that I can demo, that sounds like a good ride.
bumping along..............
..Perry